Had my Powerbook a month and not sure if I've callibrated the battery properly. Coconutbattery is showing 'original capacity: N/A' So I'm gonna try and get this right - when I drain the battery down and it goes into sleep - do I plug in the charger and then wake it up and shut it down, or do I just leave it in sleep? Then do I need to drain it right down again? When I callibrated in the first week, I plugged in to the charger and the woke the machine up and shut it down before carrying out the full charge - a mistake I presume! Sorry about the dumb question, but I have carried out a search and cannot find a definitive answer to this. Your help would be greatly appreciated.